Like many others, I gradually gave up my internal resistance on Google knowing most everything about me and have adopted Gmail as my primary mailbox.
1) Enable SSL by default on Gmail
https://mail.google.com/mail/#settings
Scroll down to bottom and choose 'Always use HTTPS' for 'Browser Connection'. Click 'Save settings'
2) Change your Gmail security question (you may want to do this now because you may have forgotten the answer to your own question that you set way back when you registered)
http://mail.google.com/support/bin/answer.py?hl=en&answe...
3) If you can't answer your Gmail security question, it will send a password reset email to your secondary email address. Consider the risks of having the secondary email address compromised (and decide whether to remove it or change it to one with a secure 'secret question' process - e.g. if you work for a company, your work email)